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NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

July 11, 1991 · Robinson R-22-B · N730SH

San Jose, CA

Overview

Report Status

Probable Cause

Event Type

Accident

Date

July 11, 1991

Injury Outcomes

1 injury (1 minor injury)

Location

San Jose, CA

Aircraft

Robinson R-22-B

Tail Number

N730SH

Operator

Hiro Takai & Fred Farnsworth

Injuries

Minor

Aircraft Damage

Substantial

NTSB Number

LAX91LA305

DURING HIS PREFLIGHT INSPECTION THE STUDENT PILOT FAILED TO UNLOCK THE HELICOPTER'S CYCLIC TRIM CONTROL. WHEN THE AIRCRAFT LIFTED OFF IT HOVERED TO THE RIGHT, DESCENDED AND COLLIDED WITH THE TERRAIN AND ROLLED OVER.

NTSB Probable Cause

THE STUDENT PILOT'S FAILURE TO UNLOCK THE CYCLIC TRIM AND TO MAINTAIN HIS HOVER ALTITUDE. HIS LACK OF EXPERIENCE WITH THE AIRCRAFT, INADEQUATE PREFLIGHT, AND THE UNCONTROLLED DESCENT WERE FACTORS IN THE ACCIDENT.

Full Narrative

DURING HIS PREFLIGHT INSPECTION THE STUDENT PILOT FAILED TO UNLOCK THE HELICOPTER'S CYCLIC TRIM CONTROL. WHEN THE AIRCRAFT LIFTED OFF IT HOVERED TO THE RIGHT, DESCENDED AND COLLIDED WITH THE TERRAIN AND ROLLED OVER.

Flight

Event TypeAccident

Event Time12:40 PDT

Nearest AirportReid Hillview (0nm N)

Runway0

Flight Plan FiledNone

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftRobinson R-22-B

Tail NumberN730SH

Aircraft CategoryHeli

DamageSubstantial

OperatorHiro Takai & Fred Farnsworth

Operating RulePart 91

Engines1

Engine TypeReciprocating

Engine DetailsLycoming · O-320-B2C · Reciprocating · 124

Seats2

People & Injuries

Injury Summary1 injury (1 minor injury)

Fatal0

Serious0

Minor1

Uninjured0

Total1

Crew 1Age 51 · Second Class

Conditions

ConditionsVMC

LightDaylight

WindCalm

Visibility10 sm

CeilingNone

Temperature / Dew Point59

Altimeter29.00 inHg

Observation Time19:45

Weather SourceWFAC

500 – Data service is offline

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July 11, 1991 · Robinson R-22-B · N730SH

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